Update .gitlab/issue_templates/book_contribution.md

.gitlab/issue_templates/book_contribution.md

@@ -28,10 +28,8 @@ Artistic Book Contribution | Encyclopedic Book Contribution >
     - < e.g. FFG 1755510 >  
     - < e.g. Christian Doppler Laboratory for Nonvolatile Magnetoresistive Memory and Logic >  
 - TU Wien Core facilities:  < None | VSC | ZMNS | etc. > 
-- Research areas, (pick from [TU Wien Research Matrix.](.gitlab/issue_templates/tuwien-research-matrix.jpg)):
-    - < e.g., Quantum Modeling and Simulation (50%) >
-    - < e.g., Design and Engineering of Quantum Systems (50%) >
-    - < e.g., Modeling and Simulation (100%) >    
+- Research areas -- Focal Areas and Fields: (pick from [TU Wien Research Matrix's subcategories and assign a percentage share; in total it should add up to 100%.](.gitlab/issue_templates/tuwien-research-matrix.jpg)):
+    - < e.g.: Modeling and Simulation (50%), Nanoelectronics (50%) >     
 - Invited: < no | yes + proof via PDF attachment >
 - Reviewed: < no | yes + proof via PDF attachment >      
 - File attachments: